"""
Case Type   : 资源池化
Case Name   : 缩容单个备机成功后，验证主备倒换
Create At   : 2024.10
Owner       : chen
Description :
    1.执行缩容备二
    gs_dropnode -U USER -G GROUP -h hostlist
    2.主备倒换
    cm_ctl switchover -A
    cm_ctl switchover -a 
    3.扩容备二，恢复环境
Expect      :
    1.成功
    2.倒换成功
    3.恢复成功
"""

import os
import unittest
from testcase.utils.Logger import Logger
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.ComThread import ComThread
from yat.test import Node
from yat.test import macro

class SharedStorage(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.pri_comsh = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.pri_node = Node('PrimaryDbUser')
        self.pri_root_node = Node('PrimaryRoot')
        self.sta2_node = Node('Standby2DbUser')
        self.db_host = self.sta2_node.db_host
        self.s_user = self.pri_node.ssh_user

    def test_shared_storage(self):
        text = f'''-----step1: 执行缩容备二 expect: 成功-----'''
        self.log.info(text)
        cmd = f'''source {macro.DB_ENV_PATH};
        expect <<EOF
        set timeout 600
        spawn gs_dropnode -U {self.s_user} -G {self.s_user} \
            -h {self.db_host}
        expect "*drop the target node (yes/no)?*"
        send "yes\\n"
        expect eof\n''' + '''EOF'''
        self.log.info(cmd)
        res = self.pri_node.sh(cmd).result()
        self.log.info(res)
        self.assertIn('Success to drop the target nodes', res)
        cmd = f'source {macro.DB_ENV_PATH}; gs_uninstall --delete-data'
        self.log.info(cmd)
        res = self.sta2_node.sh(cmd).result()
        self.log.info(res)
        self.assertIn('Uninstallation succeeded', res)

        text = f'''-----step2: 主备倒换 expect: 成功-----'''
        self.log.info(text)
        res = self.pri_comsh.exec_cm_ctl('switchover -A')
        self.log.info(res)
        self.assertIn(self.constant.cm_switchover_A_success_msg, res)
        res = self.pri_comsh.exec_cm_ctl('switchover -a')
        self.log.info(res)
        self.assertIn(self.constant.cm_switchover_success_msg, res)

    def tearDown(self):
        text = f'''-----step3: 恢复环境 expect: 成功-----'''
        self.log.info(text)
        self.log.info('----执行扩容----')
        xml_path = macro.DB_XML_PATH
        cmd = f'''gs_expansion -U {self.s_user} -G {self.s_user} -X {xml_path} -h {self.db_host}'''
        execute_cmd = f'''source {macro.DB_ENV_PATH};
        expect <<EOF
        set timeout 300
        spawn {cmd}
        expect "*assword*:"
        send "{self.pri_root_node.ssh_password}\\n"
        expect "*assword*:"
        send "{self.pri_root_node.ssh_password}\\n"
        expect "*lease repeat for database*:"
        send "{macro.GAUSSDB_INIT_USER_PASSWD}\\n"
        expect eof\n''' + '''EOF'''
        self.log.info(execute_cmd)
        res = self.pri_root_node.sh(execute_cmd).result()
        self.log.info(res)
        self.assertIn(f'{self.db_host}:\tSuccess', res)
        self.log.info(f'-----{os.path.basename(__file__)} end-----')